<template>
	<view>
		<picker mode="date" :value="date" :start="startDate" :end="endDate" @change="bindDateChange">
			<view class="uni-input">{{date}}</view>
		</picker>
	</view>
</template>

<script>
	export default {
	    data() {
	        const currentDate = this.getDate({
	            format: true
	        })
	        return {
	            date: currentDate,
	        }
	    },
	    computed: {
	        startDate() {
	            return this.getDate('start');
	        },
	        endDate() {
	            return this.getDate('end');
	        }
	    },
	    methods: {
	        
	        bindDateChange: function(e) {
	            this.date = e.target.value
	        },
	        
	        getDate(type) {
	            const date = new Date();
	            let year = date.getFullYear();
	            let month = date.getMonth() + 1;
	            let day = date.getDate();
	
	            if (type === 'start') {
	                year = year - 60;
	            } else if (type === 'end') {
	                year = year + 2;
	            }
	            month = month > 9 ? month : '0' + month;;
	            day = day > 9 ? day : '0' + day;
	            return `${year}-${month}-${day}`;
	        }
	    }
	}
</script>

<style>

</style>
